Instructions for purchasing laminated composite fireproof glass



Laminated composite fireproof glass is a common and highly popular transparent laminated composite fireproof glass in the domestic and international markets. It consists of two or more layers of flat glass sandwiched between transparent fireproof adhesives. The strength of its fire resistance mainly depends on the performance of the fire resistant adhesive. Fireproof adhesives can generally be divided into two categories: inorganic materials (sodium silicate or also known as water glass) and organic materials (acrylamide and flame retardants, etc.)，Glass product   .


In modern decoration, people are increasingly paying attention to the quality of decoration and the comfort of their homes. Whether the sound insulation effect of a house is good has become a major factor in measuring the quality of a house. What kind of glass is good for building decoration? Laminated glass has won the market by virtue of its sound insulation characteristics. Next, introduce the classification of laminated glass and the purchase of laminated glass.



Laminated glass is a kind of safety glass made by bonding two or more pieces of glass together with synthetic resin. The original piece of laminated glass can be either ordinary glass or tempered glass, semi tempered glass, coated glass, heat absorbing glass, heat bending glass, etc; The most commonly used intermediate organic materials are PVB (polyvinyl butyral), as well as methyl methacrylate, silicone, polyurethane, etc. When the outer glass is subjected to impact and ruptures, the fragments are glued together, forming only radial cracks, which will not cause personal injury or death accidents due to the scattering of fragments. At present, there are two main production methods: film method (dry method) and grouting method (wet method), but dry production is currently the mainstream.



Classification of laminated glass:



1. Bulletproof glass. It is composed of multiple transparent flat glass sheets of different thicknesses and multiple PVB films. This type of glass has high toughness, and when bullets come into contact with it, their impact may be weakened to a very low level or zero, so they cannot penetrate. General bulletproof glass can be used as military defense, protective glass for bank counters, display cabinets for precious items such as gold, silver, and jewelry.



2. Anti riot and anti-theft alarm glass. This is a transparent and high-strength glass that cannot be broken with simple tools, effectively preventing theft incidents from occurring. It is usually made of glass composed of multi-layer high-strength organic transparent materials and adhesive layer materials. In order to give warning performance, metal wire mesh can also be embedded in the adhesive layer, and sensors and alarm devices such as visible light, infrared light, temperature, pressure, etc. are embedded. Mainly used for bank vaults, weapons warehouses, cultural relics warehouses, exhibition cabinets, precious commodity counters, etc.



3. Fireproof glass. It is a new type of functional material for construction. It has good transparency and fire retardant properties. The fireproof laminated glass can be divided into composite fireproof glass and pouring fireproof glass according to the production process characteristics. There are many kinds of fireproof glass, mainly including laminated composite fireproof glass (FFB), EN film laminated glass, air conditioning glass, decorative laminated glass, etc.

How to choose laminated glass?



1. Look at the logo and check the certificate



Since the safety glass product certification was carried out in 2003, most of the construction laminated glass manufacturing enterprises in China have passed the product certification. Enterprises must screen or paste the 3C mark on the product body they sell, or add the 3C mark on its minimum outer package and attached documents (such as certificate of conformity). When purchasing products, the first step is to check if there is a 3C mark, and check through the internet whether the purchased products are within the scope of the company's mandatory certification capabilities and whether the certification certificate is valid based on enterprise information, factory number, or product certification certificate.



2. Check the appearance and quality



Check the appearance quality of the product, and the laminated glass shall be free of cracks and degumming; The length or width of the bursting edge should not exceed the thickness of the glass; Scratches and abrasions should not affect the use; The defects such as bubbles, impurities, or other visible opaque substances in the intermediate layer should not exceed the requirements of GB-9962 standard.



In the process of use, external force impact shall be avoided as far as possible, especially for the tempered laminated glass. When cleaning glass, be careful not to scratch, scratch, or abrade the surface of the glass to avoid affecting its optical performance, safety performance, and aesthetics. Neutral glue shall be used for installation of laminated glass, and it is strictly prohibited to contact with acid glue.



Laminated glass has the incomparable advantages of traditional glass, which is not only fashionable but also very safe. More and more people use laminated glass building materials in decoration to increase the permeability and lighting rate of the room.